Writing and Naming Ionic and Covalent Compounds - Isabelle Cheng

Isabelle Cheng

October 7, 2010

Block 1-2 Chemistry 11

Ms.Chen

Writing and Naming Ionic and Covalent Compounds 

IONIC COMPOUNDS:

composed of two or more particles (ions) --> oppositely changed

held together by electrostatic forces

electrons are transferred from a metal to a non-metal

Ex. Li+1     O-2

= Li2O

Ex. Ti has 4+ or 3+

Titanium (IV) fluoride ---> TiFl4

Ex. Complex Ions: a group of atoms that behave as one atom.

Na2SO4 ---> Sodium Sulphate

Na3PO4 ---> Sodium Phosphate

COVALENT COMPOUNDS:

share electrons

non-metal with non-metal

- use GREEK prefixes to indicate the number of atoms

*Diatomic molecules: H2,O2,F2,Br2,N2,Cl2,I2

MEMORIZE:

mono - 1

di - 2

tri - 3

tetra - 4 

penta- 5

hexa - 6

hepta - 7

octa - 8

nona - 9

deca - 10

Ex.

a) CO2 - Carbon dioxide

b) N2O4 - Dinitrogen Tetraoxide